84 gsl-se clutch master
 

Is there a gasket or something that is supposed to be firewall side?

I bought a new master and it just wont tighten up.

Dont see anything on the old master, worst case I can flat washer/lock washer in the gap, but I just wanted to know if im missing something.

The master I bought a while back had studs that were way too long & had an unthreaded portion that would have prevented the master from being fully tightened to the firewall. Pull the new master off & check the studs, I ended up re using my old studs. They came out of the old master easily. There is no gasket or anything else between the master & the firewall. Mazda used some sealant material on mine to seal it to the firewall.

Bruce

Thanks:) considered using the old studs, but they are stuck pretty solid.

Will give it another try today though.